An object of the present invention is to provide a heater with temperature detecting device, arranged to accurately detect the temperature of a laminated sheet heater by use of a temperature detecting device over long periods, and a battery structure including the heater with temperature detecting device. A first heater with temperature detecting device includes a first laminated sheet heater and a temperature sensor having a temperature measuring portion. The first laminated heater is constituted of first and second insulating resin films, a heater element, a first metal sheet, and a second metal sheet and includes a heater metallic section in which, of the first insulating resin film, the second insulating resin film, the heater element, the first metal sheet, and the second metal sheet, any one of only the first metal sheet and only a combination of the first metal sheet and the second metal sheet is arranged in a lamination direction of the laminated heater. The temperature sensor is fastened to the heater metallic section of the first laminated heater with a flat rivet and fixed to an outer surface of the first metal sheet with the temperature measuring portion is in contact with the first metal sheet.